Math Practice 101
Homework Explained - Math Practice 101

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Grade 4 HMH Go Math - Answer Keys


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  • Question 18 (request help)

    Two angles, \(\text{m}\angle{A}\) and \(\text{m}\angle{B}\), form a right angle. \(\text{m}\angle{A}\) measures 32°.

    For numbers 18a–18c, select True or False for the statement.

    a. \(\text{m}\angle{B}\) is an acute angle.
    • True
    • False
  • Question 18 (request help)

    b. The equation 180° − 32° = x° can be used to find the measure of \(\text{m}\angle{B}\).
    • True
    • False
  • Question 18 (request help)

    c. The measure of \(\text{m}\angle{B}\) is 58°.
    • True
    • False
  • Question 19 (request help)

    A circle is divided into parts. Which sum could represent the angle measures that make up the circle? Mark all that apply.
    • 120° + 120° + 120° + 120°
    • 25° + 40° + 80° + 105° + 110°
    • 33° + 82° + 111° + 50° + 84°
    • 40° + 53° + 72° + 81° + 90° + 34°
  • Question 20 (request help)

    Use a protractor to find the measures of the unknown angles.

    What do you notice about the measures of the unknown angles? Is this what you would have expected? Explain your reasoning.
  • \(\text{m}\angle x=\)   \(^\text{o}\)
    		       \(\text{m}\angle y=\)   \(^\text{o}\)

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